一个类别的 Woocommerce 折扣 [英] Woocommerce discount for one category

问题描述

我想为一个类别中的所有产品添加折扣.我在这里试过这个功能:

I want to add a discount for all products in a category. I've tried this function here:

add_filter( 'woocommerce_get_price', 'custom_price_sale', 10, 2 );
function custom_price_sale( $price, $product ) {
if ( has_term( 'promocje-i-outlet', 'product_cat' ) ) {
   $price = $price * ( 1 - 0.25 );
}
return $price;
}

当我只使用这个而不使用 if() 时:

When I'm using just this without the if():

$price = $price * ( 1 - 0.25 );

它运行良好，我在单个产品页面、购物车小部件、购物车页面、结帐页面和订单中看到了折扣.但是，当我尝试为类别中的特定产品设置折扣时，该产品会以正常价格添加到购物车中，但没有折扣.

it works perfectly and I see the discount on the single product page, in cart widget, on cart page, on checkout page and in an order. But when I try to set the discount to a specific product in a category, the product get's added to cart with regular price and without the discount.

我也试过在这里使用它:

I've also tried to use this here:

get_the_terms( $product->ID, 'product_cat' );

然后制作类别数组并使用它:

Then make array of categories and use this:

if ( in_array( 'promocje-i-outlet', $kategoria ) ) {
    $price = $price * ( 1 - 0.25 );
}

但效果是一样的 - 动态定价不起作用，我收到了这个警告:

But the effect is the same - dynamic pricing isn't working and I get this warning:

警告:in_array() 期望参数 2 为数组，给定为空

我做错了什么?

推荐答案

我不是 100% 肯定，但这行不通，因为这是在页面构建期间循环所有产品的函数中.has_term 函数在此处不起作用，因为它仅在您位于特定的单一产品页面上时起作用.

I'm not 100% sure but this can't work because this is within a function which loops over all products during the page build. The has_term function can't work here because it only works when you're on a specific single-product page.

在这里试试这个:

add_filter( 'woocommerce_product_get_price', 'custom_sale_price_for_category', 10, 2 );
function custom_sale_price_for_category( $price, $product ) {

    //Get all product categories for the current product
    $terms = wp_get_post_terms( $product->get_id(), 'product_cat' );
    foreach ( $terms as $term ) {
        $categories[] = $term->slug;
    }

    if ( ! empty( $categories ) && in_array( 'promocje-i-outlet', $categories, true ) ) {
        $price *= ( 1 - 0.25 );
    }

    return $price;
}

请告诉我它是否有效.

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